I don't know what games you're talking about, but it's not hard to find most PC games that you would want to play. Things like digital download make this even easier.
Name one game that is "no longer for sale" made within the last ten years.

How would running software on non-approved hardware constitute copying said software?

Wouldn't "copy protection" imply that it is actually preventing the software from being copied?

When did "copy protection" come to envelop all methods of limiting what one can do with software which one legally purchases?